Meridian G68 User guide

G68 Digital Surround Controller

Installation Guide

P r e f a c e

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• Read the instructions.

• Keep these instructions.

• Follow all instructions.

• Do not use this apparatus near water.

• Clean only with a dry cloth.

• Install only in accordance with the manufacturer’s instructions.

• Refer all servicing to approved service personnel.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,

DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.

This apparatus has been designed with Class 1 construction and

must be connected to a mains socket outlet with a protective

earthing connection (the third grounding pin).

This apparatus uses a single-pole power switch. As a result it is

not isolated from AC mains power when switched off at the rear

panel. The apparatus may be isolated from mains power either by

unplugging the power connector from the rear of the unit, or by

unplugging the connector at the opposing end of the power cord

or cable from its supply outlet. As a result, either or both of these

connectors should remain accessible

Safety warnings

• Do not expose the product to dripping or splashing.

• Do not place any object filled with liquid, such as a vase, on the

product.

• Do not place naked flame sources, such as lighted candles, on the

product.

To avoid interference

Do not position the product:

• Near strong magnetic radiation, such as near a power amplifier.

• Near to a television, or where connecting cables may be subject

to or cause interference.

To avoid overheating

• Leave at least 10cm around the equipment to ensure sufficient

ventilation.

Do not position the product:

• In direct sunlight.

• Near heat sources, such as a radiator.

• Stacked with any other audio products, as the heat it generates

may damage the other products.

• On a soft surface, such as a carpet, which would obstruct the

ventilation holes in the base.

The product normally runs warm to the touch.

Radio interference

FCC Warning: This equipment generates and can radiate radio

frequency energy and if not installed and used correctly in

accordance with our instructions may cause interference to radio

communications or radio and television reception. It has been type-

tested and complies with the limits set out in Subpart J, Part 15 of

FCC rules for a Class B computing device. These limits are intended

to provide reasonable protection against such interference in home

installations.

EEC: This product has been designed and type-tested to comply

with the limits set out in EN55013 and EN55020.

Important safety instructions

C o n t e n t s

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Contents

Introduction 1

Provides information about the digital surround controller

models, a description of each product, and technical

specifications.

Specifications

3

Installing the digital surround

controller 5

Describes how to install the digital surround controller and

connect it to the other equipment in the system.

Unpacking 5

Audio inputs 6

Audio outputs 10

Tuner and communications connections 16

Configuring the digital surround

controller 19

Explains how to configure the digital surround controller

using the front-panel controls.

Configuration Wizard 19

Stage 1: Resetting the product 20

Stage 2: Configuring speakers 22

Stage 3: Configuring sources 24

Calibrating the system 29

Describes how to fine-tune the digital surround controller

to achieve the optimum performance from your sources and

speaker layout.

Introduction 29

Calibration tests 31

Speaker size 33

Using the Sine/Sub/Sens controls 34

DSP presets 37

Gives details of the DSP presets and their parameters, and

describes how to modify them.

DSP presets 37

Defining your own presets 47

Troubleshooting 49

Provides suggested solutions to problems while installing,

configuring, or operating the product.

Maintenance 53

Service and guarantee 54

Index 55

P r e f a c e

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Copyright and acknowledgements

Sales and service in the UK

Meridian Audio Ltd

Latham Road

Huntingdon

Cambridgeshire

PE29 6YE

England

Tel +44 (0)1480 445678

Fax +44 (0)1480 445686

World Wide Web – http://www.meridian-audio.com/

Designed and manufactured in the UK by Meridian Audio

Ltd. Meridian Audio reserves the right to make changes and

improvements to any of the products described in this document

without prior notice.

Dolby, Dolby Digital, Pro Logic, AC-3, PLII, PLIIx, AAC, and the

double-D symbol are trademarks of Dolby Laboratories Licensing

Corporation. Lucasfilm, THX, and THX Cinema are registered

trademarks of Lucasfilm Ltd. Surround EX is a jointly developed

technology of THX and Dolby Laboratories, Inc and is a trademark

authorisation. DTS is a registered trademark of Digital Theatre

Systems Inc. MPEG is a registered trademark of the MPEG

organisation. Ambisonic is a registered trademark of Nimbus

Records Ltd. Trifield is a trademark of Trifield Productions Ltd.

LaserDisc is a trademark of Pioneer Electric Corp.

Boothroyd|Stuart Meridian, Meridian, Meridian Digital Theatre, and

Sooloos are registered trademarks of Meridian Audio Ltd.

Part no: GSC/5 (P89569)

Sales and service in the USA

Meridian America Inc

8055 Troon Circle

Suite C

Austell

GA30168-7849

USA

Tel +1 (404) 344 7111

Fax +1 (404) 346 7111

This guide was produced by Human-Computer Interface Ltd,

http://www.interface.co.uk/

Manufactured under license from Dolby Laboratories, Lucasfilm Ltd.

(US patents 5,043,970;5,189,703;5,222,059. European patent

0323830), Trifield Productions Ltd, and Nimbus Records Ltd.

MHR: This product incorporates patented copyright protection

technology and intellectual property of Meridian Audio Ltd.

This technology is provided for the express purpose of securely

containing copyright audio within the Meridian System only.

Reverse engineering or circumvention of this protection is strictly

prohibited.

I n t r o d u c t i o n

1

Introduction

This guide provides full information about unpacking the G68 Digital Surround Controller,

connecting it to the other equipment in the system, and configuring it using the front panel.

Once you have connected and configured the product, refer to the

G Series System Guide

for

information about operating it.

The G68 is a powerful, flexible surround controller, and represents

the centrepiece of the G Series range. It provides eight balanced

analogue outputs, eight digital outputs, component video

switching, and Meridian Room Correction.

At the heart of the G68 is a powerful DSP engine consisting of five

Motorola 56367s running at 150MHz – delivering an incredible

750MIPS (million instructions per second) capability. Processing

is performed at high sample rates and with 48-bit precision

throughout, ensuring that all filtering, processing, and other

operations are carried out beyond the limits of human hearing. The

G68 is thus a perfect processor for the very latest in digital audio.

Inputs

Analogue signals are converted via a 24-bit Delta-Sigma converter

to high-sample-rate digital on input to the processor, while all

digital signals are reclocked to minimise jitter and maintain total

data integrity. The G68 includes two six-channel S/PDIF digital

inputs (coax), a USB audio input, four stereo TOSlink optical inputs,

and six more stereo coax digital inputs. In addition, there is a six-

channel analogue input, and five stereo analogue inputs.

Formats supported

The G68 combines controller and surround processor functions,

meeting the latest THX specifications and including MPEG, DTS,

Dolby, Trifield, and Ambisonic decoding. In many cases the decoders

incorporate our own code, giving them superior integration with

the Meridian design philosophy, as well as superior performance.

As a result, the G68 can decode surround signals from all PCM

optical discs. The G68 is thus an ideal complement to a G Series

optical disc player like the G96.

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Smart Source feature

The G68’s ’Smart Source’ feature continually monitors the digital

inputs and automatically loads the correct decoding software for

the format, speaker layout, and encoding of the incoming signal.

This capability is enhanced by MHR SmartLink, which provides

a digital link between a Meridian optical disc player or HD621

and surround controller, carrying explicit information about the

nature of the datastream as well as encrypted high-resolution

digital signals from DVD-Audio – the first system of its kind to

be approved. Virtually all other manufacturers oblige you to go

through an analogue connection, losing quality in the process.

You can also store separate parameters for each source (such

as DVD) depending on whether the incoming signal is stereo or

surround, so that any source material is played with the decoder of

your choice.

Meridian Room Correction

The G68 incorporates Meridian Room Correction, a unique system

that compensates for acoustic deficiencies in your listening room,

particularly at the bass end. It achieves this by automatically

analysing the room response and then using powerful Digital

Signal Processing (DSP) technology to build a set of filters, called a

profile. This audibly improves the sound by eliminating resonances

and making the decay time consistent for frequencies below about

250Hz.

Multi-zone capabilities

The G68 provides multi-zone/recording features, consisting of

stereo digital and analogue outputs providing independent sources

to two additional zones. Meridian communications (DIN and

BNC) are also included along with RS232 and USB serial ports for

maintenance and control, an infra-red sensor input, and up to three

12V triggers.

Integral tuner

The G68 includes an integral tuner which provides AM (LW/MW)

and FM (VHF stereo Band II) reception and is fitted with its own

A/D stage. Digital signal processing provides a sophisticated FM

stereo blend/width control which allows the user to minimise noise

on a received signal. There is also a DSP-based low-pass filter and

a whistle filter for improved AM reception.

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3

Digital inputs 6 coax digital inputs, 4 optical digital inputs, 2 6-channel coax inputs, all MHR.

USB input 1 USB digital input allows connection to a Windows PC or Macintosh.

Analogue inputs 5 stereo unbalanced inputs; 1 6-channel unbalanced input.

Digital outputs L+R, C+SUB, SIDE L+R, REAR L+R Meridian SpeakerLink outputs.

Unbalanced

analogue outputs

LZ/RZ.

Balanced analogue

outputs

Main L/R, Centre/Sub, Rear L/R, Side L/R.

Zone/Tape 2 analogue outputs, 2 digital outputs.

Video 1 component video output, 3 component video inputs.

Trigger output 12VDC/100mA configurable by source.

Comms 2 5-pin 240º DIN sockets, BNC socket, USB, RS232 interface.

Conversion Up to 192kHz, 24-bit Sigma-Delta conversion on all analogue inputs and outputs.

Formats Include Dolby Digital, DTS, MPEG Surround, and AAC.

DSP modes Direct, Music, Trifield, Ambisonics, Super, Stereo, MusicLogic, Mono, TV Logic, PLIIx Music, PLIIx Movie, PLIIx THX,

Discrete, Cinema, PLIIx Mov6, PLIIx Mus6, THX, THX Surround EX, THX Ultra2 Cinema, THX Music.

Power Universal supply 100-240V, 50-60Hz, 40W.

Processing 5 Motorola 56367s running at 150MHz to give a total of approximately 750MIPS. 48-bit arithmetic throughout.

Dimensions 440mm x 132mm x 350mm (17.32" x 5.20" x 13.78") WHD.

Weight 10kg (22lb) approx.

Controls Front-panel soft keys include control of Source, Copy, Zone, Preset, etc. Standby and display buttons, volume

control, mute. Full remote control of all features via MSR+.

Display Multi-character dot-matrix Vacuum Fluorescent Display.

Indicators Standby button lit when off.

Specifications

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Installing the digital surround controller

Unpacking

The G68 Digital Surround Controller is supplied with the following

accessories:

• MSR+ remote control with batteries, manual, and spare key caps.

• Meridian Comms lead.

• Power cord.

• This manual.

•

Meridian G Series System Guide.

• Meridian Configuration Program Guide.

• AM antenna.

• FM antenna.

• FM antenna (Belling-Lee) adaptors.

If any of these items are missing please contact your dealer.

Note: You should retain the packaging in case you need to

transport the unit.

This chapter explains how to install the digital surround controller. It describes what you

should find when you unpack the product, and how you should connect it to the other

equipment in the system.

You should not make any connections to the product or to any other component in the

system while the AC power supply is connected and switched on.

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Audio inputs

COPY

ZONE 2

ZONE 3

DIG OUT COMMS

L

R

ANALOGUE OUT

TRIG 2

TRIG 3

+12V 100mA

COMPONENT OUT

Pb/B Pr/R Y/G

Y2 CABLE

Pb/B Pr/R Y/G

Y3 SAT

Y1 DVD

LZ

RZ

MAIN L MAIN R CENTRE SUB

REAR L REAR R SIDE L SIDE R

ANALOGUE OUT

SPEAKERLINK OUT

REAR L+RSIDE L+RC+SUBL+R

MASTER

(ONE ONLY, THIS ROW)

ON OFF

MERIDIAN COMMS

TRIGGER 1

+12V 100mA

OPTICAL IN

O3 O4

D12 D10 D8 DISC

D11

D9 VCR2

D7 CD

SURR C/LFE L/R

MULTI ANALOGUE IN

MULTI DIGITAL IN

A8 A7VCR1 A6 CABLE A5 TV A4 TAPE SURR R

MIC

LFE RIGHT

SURR L CENTRE LEFT

MA1

AUX

MD1

MD2

DVD

ANALOGUE IN

DIGITAL IN

L

R

IR IN

MAINTENANCE

USB RS232

L

OPT IN

O5

USB AUDIO IN OPT IN

ANTENNA

FM

AM

GND

O1SAT O2 GAME

Optical inputs 3 and 4

Multichannel digital coax inputs

Digital coax inputs

USB input

Multichannel analogue input

Optical input 2

Analogue inputs

Use this connector To connect to this

MULTI DIG IN 1 (DVD) or D1-D3,

MULTI DIG IN 2 or D4-D6

The multichannel digital output of a source such as the G96 DVD Transport, a Meridian

HD621, or three digital sources.

DIG IN D7 (CD), D8 (DISC), D9 (VCR2),

D10-D12

The digital output of a source such as a G08 24-bit Upsampling CD Player or DAB tuner.

MULTI AN IN (AUX) or A1-A3 A multichannel analogue source such as an SACD player.

ANALOGUE IN A4 (TAPE), A5 (TV),

A6 (CABLE), A7 (VCR1)

The unbalanced analogue output of a source such as a tape recorder, TV tuner, cable box,

or VCR.

USB INPUT U1 A computer USB port.

OPTICAL IN O2 (GAME), O3-O5 The optical output of a source such as a satellite receiver or computer game console.

ANALOGUE IN MIC (A8-L) An SPL meter for use in room correction configuration.

The default assignment of the sources to each input is shown in brackets after the input name in the above table. RADIO is normally

assigned to the internal tuner. To assign a different input to a source see

Configuring sources

, page 24.

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You can connect up to 12 digital coax sources to the G68 Digital

Surround Controller.

• Connect the digital source to one of the digital input sockets of

the digital surround controller, using a 75Ω screened coax phono

lead.

If the source is a Meridian product connect together the COMMS

sockets using the Comms lead provided.

To connect to a digital source (eg G06 24-bit CD Player)

G68 Digital Surround Controller

DIG IN

D7 CD

DIGITAL LEAD

COMMS LEAD

COMMS

DIGITAL OUT COMMS

G06 24-bit CD Player

To connect to an analogue source (eg TV tuner)

TV tuner

OUTPUT

PHONO LEADS

G68 Digital Surround Controller

ANALOGUE IN

A5 TV

You can connect up to eight analogue sources to the G68 Digital

Surround Controller.

• Connect the analogue source to one of the analogue input

sockets of the digital surround controller, using screened coax

phono leads.

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To connect to a computer via USB

Computer

USB

USB A-B CABLE

G68 Digital Surround Controller

USB INPUT

You can connect a Windows PC or Macintosh to the G68 via the

USB input to allow you to use the G68 as a digital audio output

device.

On a PC, Windows XP/SP2 or later is required. On a Macintosh,

OSX 10.4 or later is recommended. Linux computers that support

USB audio class drivers can also be used.

• Connect the computer’s USB port to USB INPUT U1 on the G68

using a standard USB A-B cable. The flat rectangular end plugs

into the PC and the square end into the G68.

The first time that the G68 is plugged in to the PC or Macintosh

it will automatically be recognised, and appropriate drivers will be

installed. The G68 will then appear as a sound output device called

Meridian 48k/16 in the Sound control panel (PC) or Sound

system preferences panel (Macintosh).

Note: The computer volume control will have no effect on the

playback volume; use the Meridian system control instead.

To connect to a Meridian Smart Source with digital multichannel outputs (eg HD621 HDMI Audio Processor)

HD621 HDMI Audio Processor

3 x DIGITAL LEADS

COMMS LEAD

G68 Digital Surround Controller

MULTI DIG IN 1

(DVD)

COMMS

SMARTLINK

The G68 Digital Surround Controller provides 12 digital coax inputs,

six of which can be used as two multichannel inputs from a source

with a suitable digital multichannel output, such as the HD621

HDMI Audio Processor.

• Connect the SmartLink outputs 1/2, 3/4, and 5/6 on the HD612

to the MULTI DIG IN 1 on the G68, using three 75Ω screened

coax phono leads.

• Connect together the COMMS sockets using the Comms lead

provided.

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To connect to a source with analogue multichannel outputs (eg SACD player)

SACD player

6 x PHONO LEADS

DIGITAL LEADS

G68 Digital Surround Controller

MULTI AN IN

MULTICHANNEL

OUTPUT

DIG IN D8 DISC

DIGITAL

OUTPUT

The G68 Digital Surround Controller provides eight analogue

inputs, three of which can be used as a multichannel input from a

source with a suitable analogue multichannel output, such as an

SACD player.

• Connect the ANALOGUE OUT sockets from the source to the

analogue multichannel inputs on the digital surround controller

using six phono leads.

• Optionally connect a digital output from the source to digital

input D8 (DISC) on the digital surround controller, using a digital

phono lead.

You can then select the source corresponding to the multichannel

input (AUX) for playing surround material, and the source

corresponding to the digital input (DISC) to decode other formats.

Note: Multichannel analogue sources may have subwoofer level

outputs that vary by up to 10dB, so it may be necessary to reduce

the LFE level to give correct bass integration; see

DSP presets

, page

37.

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Audio outputs

COPY

ZONE 2

ZONE 3

DIG OUT COMMS

L

R

ANALOGUE OUT

TRIG 2

TRIG 3

+12V 100mA

COMPONENT OUT

Pb/B Pr/R Y/G

Y2 CABLE

Pb/B Pr/R Y/G

Y3 SAT

Y1 DVD

LZ

RZ

MAIN L MAIN R CENTRE SUB

REAR L REAR R SIDE L SIDE R

ANALOGUE OUT

SPEAKERLINK OUT

REAR L+RSIDE L+RC+SUBL+R

MASTER

(ONE ONLY, THIS ROW)

ON OFF

MERIDIAN COMMS

TRIGGER 1

+12V 100mA

OPTICAL IN

O3 O4

D12 D10 D8 DISC

D11

D9 VCR2

D7 CD

SURR C/LFE L/R

MULTI ANALOGUE IN

MULTI DIGITAL IN

A8 A7

VCR1

A6

CABLE

A5

TV

A4

TAPE SURR R

MIC

LFE RIGHT

SURR L CENTRE LEFT

MA1

AUX

MD1

MD2

DVD

ANALOGUE IN

DIGITAL IN

L

R

IR IN

MAINTENANCE

USB RS232

L

OPT IN

O5

USB AUDIO IN OPT IN

ANTENNA

FM

AM

GND

O1SAT O2 GAME

SpeakerLink outputs

Zone 2 and 3 audio outputs

Balanced analogue outputs

Analogue outputs

Use this output To connect to this

L+R, C+SUB, SIDE L+R, REAR L+R Digital loudspeakers, using Meridian SpeakerLink leads or standard CAT5 network

cables. Connect the master speaker to the appropriate socket on the lower row.

Connect the slave speakers to the other sockets as shown in the following diagrams.

ANALOGUE OUT MAIN L, MAIN R, CENTRE,

SUB, REAR L, REAR R, SIDE L, SIDE R

The balanced analogue input of a power amplifier or active loudspeakers, using XLR

connections.

ANALOGUE OUT LZ/RZ A pair of analogue active speakers, the unbalanced analogue inputs of a power

amplifier, or up to two active subwoofers, using screened coax phono leads.

COPY ZONE 2, ZONE 3 ANALOGUE OUT The unbalanced analogue input of a tape recorder, or second and third-room systems.

COPY ZONE 2, ZONE 3 DIG OUT The digital input of a digital recorder, or second and third-room systems.

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To connect the G68 to Meridian DSP loudspeakers (daisy chain)

G68 Digital Surround Controller

SPEAKERLINK

OUTPUTS

SPEAKERLINK LEAD

DSP Loudspeaker – Centre (Slave)

SPEAKERLINK

INPUT OUTPUT

DSP Subwoofer – Sub (Slave)

DSP Loudspeaker – Main Left (Master)

SPEAKERLINK

INPUT OUTPUT

DSP Loudspeaker – Main Right (Slave)

SPEAKERLINK

INPUT OUTPUT

DSP Loudspeaker – Rear Left (Slave)

SPEAKERLINK

INPUT OUTPUT

DSP Loudspeaker – Rear Right (Slave)

SPEAKERLINK

INPUT OUTPUT

SPEAKERLINK

INPUT OUTPUT

This is an alternative to the “home run” wiring configuration

shown in the next section.

The G68 automatically assumes that the main left speaker is the

master, unless it is analogue, in which case the DSP centre, left

side, or left rear is used in order of priority (unless explicitly set

differently in the Meridian Configuration program).

• Connect the appropriate

SpeakerLink output on the lower row

of the G68 to the master digital speaker (typically the main left

speaker), using a Meridian SpeakerLink lead.

• Connect the appropriate SpeakerLink outputs on the G68 to one

of each of the remaining pairs of speakers, using a Meridian

SpeakerLink lead.

• Link each pair of speakers together with a Meridian SpeakerLink

lead, out of the first speaker and into the second speaker, as

shown in the diagram.

The speakers should then be configured appropriately as master

and slaves, and Left, Right, Centre, Surround; see

Meridian DSP

Loudspeaker User Guide

for more details.

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To connect the G68 to Meridian DSP loudspeakers (home run)

G68 Digital Surround Controller

SPEAKERLINK

OUTPUTS

SPEAKERLINK LEAD

DSP Loudspeaker – Centre (Slave)

SPEAKERLINK

INPUT OUTPUT

DSP Subwoofer – Sub (Slave)

DSP Loudspeaker – Main Left (Master)

SPEAKERLINK

INPUT OUTPUT

DSP Loudspeaker – Main Right (Slave)

SPEAKERLINK

INPUT OUTPUT

DSP Loudspeaker – Rear Left (Slave)

SPEAKERLINK

INPUT OUTPUT

DSP Loudspeaker – Rear Right (Slave)

SPEAKERLINK

INPUT OUTPUT

SPEAKERLINK

INPUT OUTPUT

This is an alternative to the “daisy chain” wiring configuration

shown in the previous section.

The G68 automatically assumes that the main left speaker is the

master, unless it is analogue, in which case the DSP centre, left

side, or left rear is used in order of priority (unless explicitly set

differently in the Meridian Configuration program).

• Connect the appropriate

SpeakerLink output on the lower row

of the G68 to the master digital speaker (typically the main left

speaker), using a Meridian SpeakerLink lead.

• Connect the appropriate SpeakerLink outputs on the G68 to each

of the remaining speakers, using a Meridian SpeakerLink lead.

The speakers should then be configured appropriately as master

and slaves, and Left, Right, Centre, Surround; see

Meridian DSP

Loudspeaker User Guide

for more details.

Alternatively you can use standard CAT5 network cables instead of

SpeakerLink leads.

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To connect the G68 to power amplifiers or to analogue active and passive speakers powered by a Meridian G41

CHANNEL 1 INPUTS

1 3 4

A B

2

CHANNEL 3

G41 Powered

Crossover/Amplifier

CHANNEL 2

CH. A CH. B

ANALOGUE OUT

G68 Digital Surround Controller

A330

Main right

A330

Centre

P330

Rear right

P330

Rear left

A330

Main left

Analogue subwoofer

COMMS

INPUT OUTPUT

PHONO

The G68 provides eight balanced and two unbalanced analogue

outputs to allow you to connect to power amplifiers and passive

loudspeakers, or 300 Series Active and Passive Installation

Loudspeakers powered by the G41 Active Crossover Amplifier.

• Connect the LEFT and RIGHT analogue outputs to the power

amplifier inputs for the main front loudspeakers.

• Connect the CENTRE analogue output to the power amplifier

input for the centre loudspeaker.

• Connect the REAR L and REAR R analogue outputs to the power

amplifier inputs for the rear loudspeakers.

When the G41 is used with five speakers, as shown above, inputs

A and B for the rear speakers are unbalanced inputs, so use the

unbalanced LZ and RZ outputs.

• If the system includes a subwoofer connect the SUB analogue

output to an active analogue subwoofer, such as the Meridian

SW1600.

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To connect to an active subwoofer (eg Meridian SW1600 or SW5500)

Subwoofer

PHONO LEAD

G68 Digital Surround Controller

SUB

CROSSOVER

INPUT

DIRECT

INPUT

The Meridian SW1600 and SW5500 subwoofers provide both

digital and analogue inputs, allowing you to connect them to

either the digital or analogue subwoofer outputs of the G68. The

analogue connection must be used if you do not have a digital

main speaker.

• Connect the SUB analogue output socket from the G68 Digital

Surround Controller to the subwoofer’s line-level input using a

phono lead.

Use the RZ output (or RZ and LZ if you have two subwoofers).

The digital surround controller provides a very high-quality

crossover for the subwoofer, and for best results you should use

this instead of the subwoofer’s crossover. To do this remove any

crossover in the subwoofer or set it to its highest setting (eg

200Hz). The subwoofer crossover can be set from the front panel of

the G68; see

Subwoofer crossover frequency

, page 34.

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COPY

ZONE 2

ZONE 3

DIG OUT COMMS

L

R

ANALOGUE OUT

TRIG 2

TRIG 3

+12V 100mA

COMPONENT OUT

Pb/B Pr/R Y/G

Y2 CABLE

Pb/B Pr/R Y/G

Y3 SAT

Y1 DVD

LZ

RZ

MAIN L MAIN R CENTRE SUB

REAR L REAR R SIDE L SIDE R

ANALOGUE OUT

SPEAKERLINK OUT

REAR L+RSIDE L+RC+SUBL+R

MASTER

(ONE ONLY, THIS ROW)

ON OFF

MERIDIAN COMMS

TRIGGER 1

+12V 100mA

OPTICAL IN

O3 O4

D12 D10 D8 DISC

D11

D9 VCR2

D7 CD

SURR C/LFE L/R

MULTI ANALOGUE IN

MULTI DIGITAL IN

A8 A7

VCR1

A6

CABLE

A5

TV

A4

TAPE SURR R

MIC

LFE RIGHT

SURR L CENTRE LEFT

MA1

AUX

MD1

MD2

DVD

ANALOGUE IN

DIGITAL IN

L

R

IR IN

MAINTENANCE

USB RS232

L

OPT IN

O5

USB AUDIO IN OPT IN

ANTENNA

FM

AM

GND

O1SAT O2 GAME

Component inputs

Component outputs

Use this connection To connect to this

Y1 (DVD), Y2 (CABLE), Y3 (SAT)

The component video output of a video source (interlaced or HD), using a 75Ω coax

cable with phono connectors.

COMPONENT OUT

The component video input of a TV or monitor, using a 75Ω coax cable with phono

connectors.

Video connections

I n s t a l l i n g t h e

d i g i t a l s u r r o u n d

c o n t r o l l e r

1 6

COPY

ZONE 2

ZONE 3

DIG OUT COMMS

L

R

ANALOGUE OUT

TRIG 2

TRIG 3

+12V 100mA

COMPONENT OUT

Pb/B Pr/R Y/G

Y2 CABLE

Pb/B Pr/R Y/G

Y3 SAT

Y1 DVD

LZ

RZ

MAIN L MAIN R CENTRE SUB

REAR L REAR R SIDE L SIDE R

ANALOGUE OUT

S

PEAKER

L

INK OUT

REAR L+RSIDE L+RC+SUBL+R

MASTER

(ONE ONLY, THIS ROW)

ON OFF

MERIDIAN COMMS

TRIGGER 1

+12V 100mA

OPTICAL IN

O3 O4

D12 D10 D8 DISC

D11

D9 VCR2

D7 CD

SURR C/LFE L/R

MULTI ANALOGUE IN

MULTI DIGITAL IN

A8 A7

VCR1

A6

CABLE

A5

TV

A4

TAPE SURR R

MIC

LFE RIGHT

SURR L CENTRE LEFT

MA1

AUX

MD1

MD2

DVD

ANALOGUE IN

DIGITAL IN

L

R

IR IN

MAINTENANCE

USB RS232

L

OPT IN

O5

USB AUDIO IN OPT IN

ANTENNA

FM

AM

GND

O1SAT O2 GAME

AM tuner aerial

Trigger output 1

FM or DAB/FM tuner aerial

RS232 connection

Infra-red repeater input

Power & fuse

Meridian DIN Comms connection

Meridian BNC Comms connection

Trigger outputs 2&3

USB connection

Use this connection To connect to this

DIN COMMS Other Meridian G Series, 500 Series, or 800 Series equipment, or Meridian DSP loudspeakers.

BNC COMMS Meridian components with BNC Comms.

RS232 connection A computer, for configuring the digital surround controller.

USB connection A computer, for configuring the digital surround controller.

IR IN A G12 IR Receiver, or approved alternative infra-red receiver. Contact your dealer for details.

ANTENNA FM, AM FM and AM antennae.

TRIG 1, TRIG 2, TRIG 3* Other equipment, via mono 3.5mm jack plug outputs (centre pin hot) providing 12VDC. They are always

low in standby. By default they are high for all sources, so can be used to bring a G Series power

amplifier out of standby. Alternatively you can program them to be high for specific sources; eg to control

a projection screen.

Tuner and communications connections

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